Endocrine basics (revision of 1st year)

Question 2

Types og hormones

Answer 2

• Endocrine - enters circulation + target cell/organ
• Paracrine - effect on local cell but doesnt enter circulation
• Autocrin - affects cell secreted from
• Intracrine - intracellular action

Question 3

Three main classes of hormones

Answer 3

• Protein -
  
  • peptides eg insulin
  • amino acid - usually tyrosine eg thyroxine derivatives
• Steroids
• Eicosanoids eg prostaglandins
  
  • Parocrine or autocrine i n function